/**
 * Software License, Version 1.0
 * 
 * Copyright 2003 The Trustees of Indiana University.  All rights reserved.
 * 
 *
 *Redistribution and use in source and binary forms, with or without 
 *modification, are permitted provided that the following conditions are met:
 *
 *1) All redistributions of source code must retain the above copyright notice,
 * the list of authors in the original source code, this list of conditions and
 * the disclaimer listed in this license;
 *2) All redistributions in binary form must reproduce the above copyright 
 * notice, this list of conditions and the disclaimer listed in this license in
 * the documentation and/or other materials provided with the distribution;
 *3) Any documentation included with all redistributions must include the 
 * following acknowledgement:
 *
 *"This product includes software developed by the Community Grids Lab. For 
 * further information contact the Community Grids Lab at 
 * http://communitygrids.iu.edu/."
 *
 * Alternatively, this acknowledgement may appear in the software itself, and 
 * wherever such third-party acknowledgments normally appear.
 * 
 *4) The name Indiana University or Community Grids Lab or NaradaBrokering, 
 * shall not be used to endorse or promote products derived from this software 
 * without prior written permission from Indiana University.  For written 
 * permission, please contact the Advanced Research and Technology Institute 
 * ("ARTI") at 351 West 10th Street, Indianapolis, Indiana 46202.
 *5) Products derived from this software may not be called NaradaBrokering, 
 * nor may Indiana University or Community Grids Lab or NaradaBrokering appear
 * in their name, without prior written permission of ARTI.
 * 
 *
 * Indiana University provides no reassurances that the source code provided 
 * does not infringe the patent or any other intellectual property rights of 
 * any other entity.  Indiana University disclaims any liability to any 
 * recipient for claims brought by any other entity based on infringement of 
 * intellectual property rights or otherwise.  
 *
 *LICENSEE UNDERSTANDS THAT SOFTWARE IS PROVIDED "AS IS" FOR WHICH NO 
 *WARRANTIES AS TO CAPABILITIES OR ACCURACY ARE MADE. INDIANA UNIVERSITY GIVES
 *NO WARRANTIES AND MAKES NO REPRESENTATION THAT SOFTWARE IS FREE OF 
 *INFRINGEMENT OF THIRD PARTY PATENT, COPYRIGHT, OR OTHER PROPRIETARY RIGHTS. 
 *INDIANA UNIVERSITY MAKES NO WARRANTIES THAT SOFTWARE IS FREE FROM "BUGS", 
 *"VIRUSES", "TROJAN HORSES", "TRAP DOORS", "WORMS", OR OTHER HARMFUL CODE.  
 *LICENSEE ASSUMES THE ENTIRE RISK AS TO THE PERFORMANCE OF SOFTWARE AND/OR 
 *ASSOCIATED MATERIALS, AND TO THE PERFORMANCE AND VALIDITY OF INFORMATION 
 *GENERATED USING SOFTWARE.
 */
package cgl.narada.wsinfra.deployment.axis;

import java.io.ByteArrayInputStream;
import java.io.InputStream;
import java.util.LinkedList;

import javax.xml.soap.SOAPMessage;

import org.apache.axis.client.Call;
import org.apache.axis.client.Service;
import org.apache.axis.message.SOAPEnvelope;

import cgl.narada.wsinfra.deployment.impl.SoapMessageRouting;

/**
 * This class runs thread. It accepts messages into a linklist. When a new
 * message arrives, the thread is notified to send message to the destination.
 *
 * @author Beytullah Yildiz
 * $Date: 2005/07/29 22:45:39 $
 * $Revision: 1.1 $
 */

public class AxisMessageInjector
    extends Thread {

  private String moduleName = "AxisMessageInjector ";
  private Object synchObject;
  private LinkedList linkedList;
  private String serviceURL;
  private String soapActionURI;

  public AxisMessageInjector() {
    synchObject = new Object();
    linkedList = new LinkedList();

  }

  /**
   * Adds message into the queue
   */
  public void addObjectToList(Object obj) {

    linkedList.add(obj);

    synchronized (synchObject) {
      synchObject.notify();
    }
    ;
  }

  /**
   * return fisrt message from the queue
   */
  public Object getFirstObjectFromList() {

    return linkedList.removeFirst();
  }

  /**
   * Setters and getters to reach class variables
   */
  public void setServiceURL(String serviceURL) {
    this.serviceURL = serviceURL;
  }

  public String getServiceURL() {
    return serviceURL;
  }

  public void setSoapActionURI(String soapActionURI) {
    this.soapActionURI = soapActionURI;
  }

  public String getSoapActionURI() {
    return soapActionURI;
  }

  /**
   * Creates a Call instance and returns it
   */
  public Call getServiceCall(String serviceURL, String soapActionURI) {
    Call serviceCall = null;
    try {

      Service service = new Service();
      serviceCall = (Call) service.createCall();
      serviceCall.setTargetEndpointAddress(new java.net.URL(serviceURL));
      serviceCall.setSOAPActionURI(soapActionURI);

    }
    catch (Exception e) {
      System.out.println(moduleName + e);
    }
    return serviceCall;
  }

  /**
   * sends a message which is received fro queue. This method is invoked from
   * run method of thread
   */
  public void sendSOAPMessage(SOAPMessage soapMessage) {

    try {

      byte[] soapMessageByte = cgl.narada.wsinfra.util.SoapMarshaller.
          marshallSoapMessage(soapMessage);
      InputStream inputStream = new ByteArrayInputStream(soapMessageByte);
      SOAPEnvelope soapEnvelope = new SOAPEnvelope(inputStream);

      soapEnvelope = WsInfraEnvelopeModifier.addDummyBodyElement(soapEnvelope);

      SoapMessageRouting soapMessageRouting = SoapMessageRouting.getInstance();
      String destination = null;
      try {
        destination = soapMessageRouting.computeDestination(soapMessage);
      }
      catch (Exception e) {
        System.out.println(moduleName + e);
      }

      getServiceCall(destination, soapActionURI).invoke(soapEnvelope);

    }
    catch (Exception e) {
      System.out.println(moduleName + e);
    }

  }

  /**
   * Thread's run method
   */
  public void run() {

    while (true) {

      if (linkedList.size() == 0) {
        synchronized (synchObject) {
          try {
            synchObject.wait();
          }
          catch (InterruptedException e) {
            System.out.println(moduleName + e);
          }

        }
        ;

        /*end synchronized(syncObject) */
      }

      if (linkedList.size() == 0) {
        continue;
      }

      SOAPMessage soapMessage = (SOAPMessage) getFirstObjectFromList();
      sendSOAPMessage(soapMessage);

    }

  }

}